Shadow of the wormholelike static aether solution

Understand

Recently, an analytical solution in Einstein-aether theory was presented explicitly in isotropic coordinates.

• It is characterized by a mass parameter $m$ and a combined coupling constant $c_{14}$.
• By a coordinate transformation, we verify this solution is equivalent to the previously known static aether solution.
• Assuming photons couple minimally to aether and gravity, we investigate the photon sphere and shadow of the solution by varying $c_{14}$.